# 请补充你的代码
import math
R = 6371*1000
V = (4*math.pi*(R**3))/3
P = 5507.85
weight = P * V
print(f'地球质量约为{(weight/(1000*1000000000000)):.1f}万亿吨')
print('地球质量约为{:e}千克'.format(weight))